LifeSpan MF-4000 Owner's Manual page 8

STEP 3:
a) Attach 1x Adjustable Tube (#13) between 2x Pad Tubes (#5), then secure 2x Pad Tubes (#5)
onto 1x Main Support Tube (#6) with:

1x Hex Bolts M10 x 190mm (#29)

2x Washers Φ10 (#22)

1x Nuts M10 (#25)
b) Attach 4x Tube Plug to 2x Pad Tubes (#5).
8
MF-4000 Weight Bench